Flue-hole cutter



(N0Model.) J G BRD FLUEEOLIi GUTi'ER.

2 Patented Oot. 14, 1890.

ATENTV JOHN G. ERD, OF SAGINAVV, MIOHIGAN.

FLUE-HOLE CUTTER.

SPEGIFICATION forming part of Letters Patent N0. 438,230, dated October 14, 1890.

Applioation filed January 23, 1890. Serial N0. 337,896. (N0 model.)

.To all wlwm z't may concem:

Bo lt known tha I, JOHN G. ERD, a oitizen of oho United Staces, rosiding ab Saginaw, in oho county of Saginaw and Stato of Michigan, haveinvonted certainnowand useful Improvoments in Flue-Holo Cuooors; ancl I clo doolare the following to bo a full, cloar, and oxaet doscription of oho invention, such as Will enablo othors skillod in tho art to which i appertains to make and uso the same, reforonoe being had. to tho acoompanying drawings, and co the letters of roforenoo marked thereon, whioh form a part of this spocifioation.

My invontion relates t0 improvomonts in fiue-hole outters; and its objeets is eo provide a cool that oan bo eas ily adjust-ed so any sizo 0f hole Without remoxiing the knives, and also that tho knives may bo romoved for sharponing, &c., ancl replaood without having to readjust them 130 the hole. This I aecomplish l0y tho following-closcribod meohanism.

Figurol is a side viow of the cuttor inverted. Fig. II is a top viow of ehe euttor. Fig. III is a seotional viow of the shank, showing depth of shoulder at lino G H in Fig. I.

A is the shank,having its uppor ond fitted so insort into the sookot of the drill ancl the lower end fitted so pass through hole in oho boiler-head plato 130 hold 1311e plato in place, as in ordinary cuttors.

B aro arms of the shank A, oxtending in opposite dirootions horizontally ancl ab right anglos to tho shank A ancl parallel 110 an extended diamoter-line of ho shank A and at such a distanoo therefrom that whon tho knivos D aro insorod bot'woen said lino and tho arms B the cutting-edgo of each will bo 011 oho said diamotor-lino.

O are dogs sliding over tho arms B, to whioh thoy may be rigidly seoured by means of tho set-screw F.

D are knives 01 cutting-tool proper an l pass fihrough slots in oho dogs O providocl for thom at oho edge 0f the arms B, and With thoir outting-edge on the outsiclo anclon a lino with each other, whioh line should bo the cliamoerline of the-shank A. The knivos D are hold in the dogs O by tho thumb-scrow E and aro firrnly securod to the arms B With tho (logs O by tho so-scrow F.

T0 aclj ust tho knives for a larger or smaller hole, oho sot-screwl3 is loosened and the dogs O slid along tho arms B so the dosirod point and again tightonocl.

I do not wish to bo un lorstood as oonfining myself eo any spocial form or oonstruoion of parts, and thereforo any ohange may bo made as comos wit-hin ordinary mechanioal skill without departing fron1 Ehe prlnoiplo of my invontion. 1

Having thus fully closcribod my invention, what I elaim as now, ancl desire to socure by Letters Patent, is

l. A fluo-holo enttor having its shank A fitted at is upper end for engaging a drill-sookot and at its lower end for passingohrough and holcling tho plate to loo (lrilled in position, and having two horizontal arms B at right angles so the shank A and oxtending from opposite sicles in opposito direobions and ab equal distance from and parallel t0 an exonclod diamotor-lino of shank A, and having dogs C sliding ovor arms B, said dogs O having slots through whioh knivos D pass just ab the sido of oho arn1s B, oho cuoting-odgo of knivos D being on line With eaoh othor antl the oentor of shank A and being concontric With shank A and eaeh. other and sooured so dogs O by thunab-screw E an(l with dogs O to .arms B by set-scrow F, substancia'lly as and for the purposo seu forth.

2. In a flue-hole eutter, oho shank A, having two horizontal opposite arme B at right angles to shank A and extonding parallel 110 a line drawn through oho diarnoter of shank A, in combination with the dogs O, sliding upon arms B, and knivos D, passing through slots in dogs O ab side of arms B ancl botweon arms B, and an oxtonded diamoter-lino of shank A, with ohoir outting-edgo toward and upon sald lino, and sot-scrow F, holding knivos and dogs in position 011 arms B, substantially as and for the purpose sei: forth.

3. In a fluo-holo cutter, the shank A, having two horizontal opposito arme B ab right anglos to shank A and oxtending parallel to a. 1ine drawn through the diameter of shank screw F, seeuring dogs C to arms B, substan- A,'in eombination With the dogs O, s1iding tia11y as and for the purpose Set forth. 10 upon arme B, aa'1d knives D, passing through In testimony whereof Iaffix mysignature in s1ots in dogs O at side of arms B andbetween presence of two witnesses.

5 arms B, and an extended diameter-line 0f JOHN G. ERD.

said shank A, with their cutting-edge toward WVitnesses: and upon said 1ine, and. the thumb-screw E, W. L. OASE,

holding knives D firm1y in dogs C, and set- A. H. SWARTHOUT. 

